Traffic source trigger

Besides URL targeting, you can target a test to only those visitors who come from a specific traffic source. So you can assign visitors to your tests when they come from your sponsored links, your Facebook ad campaigns, or a specific email campaign.  

You can use one of the four available sub-criteria:

1. Source: the source from which the visitor arrived on your site. This is calculated in the same way as in Google Analytics (domain name when the medium is the referrer, search engine if it is an organic medium…). If your traffic acquisition campaigns are tracked properly, you can use these criteria, for example, to run a test only for visitors who come from one of your newsletters.
2. Originating keyword: the key search term or terms the visitor used to arrive at your site. For example, you can run tests for visitors who typed the name of your brand or its variations to access your site. On the flip side, you can target visitors who access your site through generic requests, using the “Exclude” operator and specifying your brand in the "Originating Keyword" field.
3. Landing page: apply the following configuration for your PPC (pay-per-click) campaigns.
   
4. Source type: the type of source from which the visitor arrived at your site. We distinguish four standard types of sources: direct access, referrer link, Google-sponsored link, natural search. The visitor is assigned to one of these source types based on a series of conditions performed on the referrer, like in Google Analytics.

It is important to note that the conditions relative to traffic acquisition are related to the visitor and not the page being tested.